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I made a little Instagram reel about this image because it’s just so frickin’ cool

Katie Mack@astrokatie.com

More context on this #Artemis II image: * This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right * The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon: ☀️🌍🚀🌕

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Because there is no inherent “up” or “down” in the universe. Those directions only make sense within the frame of reference of a planet or other celestial object, where its gravity establishes that orientation. Once you consider the whole planet from the outside, up and down become meaningless.

Great video explaining a stunning image! I'm don't know what this faint line in the corner is, as it seems the stars disappear once you cross over it. I've no doubt the image is 100% real and undoctored. I'm just genuinely curious about what it may be, since I'm not super familiar with space photos

Ah! That makes sense. You can even see it curving a bit in the edges of the image when you follow it. I was thinking it was taken from outside the capsule by an outside camera. Thanks!

It wasn't until I looked at the full-size image that I noticed the city lights in Spain and Portugal down there in the lower left. This is the Earth on the night side!

I love this. Part One of my latest book takes place in a near-future ice mining base in Henson crater near the lunar South Pole. From Henson, Earth, when visible, appears upside-down, just like this image!

fun fact! the photo was taken with a nikon d5, which is a decade old not very fancy at all (it was the flagship at the time but 10 years is a long time in camera tech)

The Blue Marble photo (1972) was taken with a Hasselblad 500 EL, which uses 6×6 film. Low-ISO film of that size is roughly equivalent to 100–200 megapixels of resolution, while the Nikon D5 is about 20Mpx. Only recently have the best medium-format digital cameras reached the 100–200 megapixel range.

much! and no post-processing ”ai” fuckery! i just think it’s really neat that it’s a decade old and still this great i didn’t mean it in a snarky way

Yep, the cameras were selected because they were already certified for spaceflight & fit within mass constraints. At the last minute, we did add a z9.

that’s what i assumed! but very very cool that you took time to tell us, thanks! the d5 is an amazing camera do you think mirrorless will prove to be better for spaceflight in the future? since you can operate them without a moving shutter?

Another cool thing is that there are actually five planets in frame, as Saturn, Mars, and Mercury are all occulted by the Earth from this perspective. This is a rough-but-close diagram using a screenshot from Stellarium, with the blue circle indicating Earth, and red square for image frame.